http://www.intel.com/Assets/PDF/prodbrief/320116.pdf Network Card INTEL Gigabit ET2 (PCI Express,10/100/1000Base-T) Networking Type: Network Adapter Local Area Network Architecture: 10Base-T/100Base-TX/1000Base-T Interface: PCI Express Requires Expansion Slot Standard: PCI Express Networking Form Factor: Plug-in-card Network Interface Card - Interface Provided Ethernet 10Base-T/100Base-TX/1000Base-T Port Quantity: 4 Ethernet 10Base-T/100Base-TX/1000Base-T Port Connector Type: RJ-45